Reference Guide

Subscribing to Managed Object Value Updates using
SNMP
By default, the system displays some unsolicited SNMP messages (traps) upon certain events and conditions.
You can also configure the system to send the traps to a management station. Traps cannot be saved on the system.
The following sets of traps are supported:
● RFC 1157-defined traps — coldStart, warmStart, linkDown, linkUp, authenticationFailure, and egpNeighbborLoss.
● Dell Networking enterpriseSpecific environment traps — fan, supply, and temperature.
● Dell Networking enterpriseSpecific protocol traps — bgp, ecfm, stp, and xstp.
To configure the system to send SNMP notifications, use the following commands.
1. Configure the Dell Networking system to send notifications to an SNMP server.
CONFIGURATION mode
snmp-server host ip-address [traps | informs] [version 1 | 2c |3] [community-string]
To send trap messages, enter the keyword traps.
To send informational messages, enter the keyword informs.
To send the SNMP version to use for notification messages, enter the keyword version.
To identify the SNMPv1 community string, enter the name of the community-string.
2. Specify which traps the Dell Networking system sends to the trap receiver.
CONFIGURATION mode
snmp-server enable traps
Enable all Dell Networking enterprise-specific and RFC-defined traps using the snmp-server enable traps command
from CONFIGURATION mode.
Enable all of the RFC-defined traps using the snmp-server enable traps snmp command from CONFIGURATION
mode.
3. Specify the interfaces which send SNMP traps.
CONFIGURATION mode
snmp-server trap-source
The following example lists the RFC-defined SNMP traps and the command used to enable each. The coldStart and warmStart
traps are enabled using a single command.
snmp authentication SNMP_AUTH_FAIL:SNMP Authentication failed.Request with invalid
community string.
snmp coldstart SNMP_COLD_START: Agent Initialized - SNMP COLD_START.
SNMP_WARM_START:Agent Initialized - SNMP WARM_START.
snmp linkdown PORT_LINKDN:changed interface state to down:%d
snmp linkup PORT_LINKUP:changed interface state to up:%d
Enabling a Subset of SNMP Traps
You can enable a subset of Dell Networking enterprise-specific SNMP traps using one of the following listed command options.
To enable a subset of Dell Networking enterprise-specific SNMP traps, use the following command.
● Enable a subset of SNMP traps.
snmp-server enable traps
NOTE:
The envmon option enables all environment traps including those traps that are enabled with the envmon
supply, envmon temperature, and envmon fan options.
envmon
LINECARDUP: %sLine card %d is up
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Simple Network Management Protocol (SNMP)